211992020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1\times {\mathrm{563}}^1$

素因数の和:920

約数の個数: 48

約数和(自身を含む): 454241088

約数和(自身を除く): 242249068

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 281, 335, 562, 563, 670, 1124, 1126, 1340, 1405, 2252, 2810, 2815, 5620, 5630, 11260, 18827, 37654, 37721, 75308, 75442, 94135, 150884, 158203, 188270, 188605, 316406, 376540, 377210, 632812, 754420, 791015, 1582030, 3164060, 10599601, 21199202, 42398404, 52998005, 105996010, 211992020]

約数ペア:

[(1, 211992020), (2, 105996010), (4, 52998005), (5, 42398404), (10, 21199202), (20, 10599601), (67, 3164060), (134, 1582030), (268, 791015), (281, 754420), (335, 632812), (562, 377210), (563, 376540), (670, 316406), (1124, 188605), (1126, 188270), (1340, 158203), (1405, 150884), (2252, 94135), (2810, 75442), (2815, 75308), (5620, 37721), (5630, 37654), (11260, 18827)]